Life sciences code of life- grade 12
Presentation
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Science
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12th Grade
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Practice Problem
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Easy
Danielle Plooy
Used 7+ times
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2 Slides • 9 Questions
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Life Sciences Grade 12
DNA: Code of life
(CAPS, 2011:59)
By Danielle Plooy
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"Deoxyribonucleic acid (abbreviated DNA) is the molecule that carries genetic information for the development and functioning of an organism" (Bates, 2025).
3
Dropdown
4
Multiple Select
According to your notes and lesson 1 of this unit. Which two scientists discovered the structure of DNA in 1953?
Francis Crick
James Watson
Maurice Wilkins
Rosalind Franklin
5
Fill in the Blanks
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Multiple Choice
Which following facts about the DNA structure is false?
The DNA molecule is made up of a ladder like structure, called a Double Helix.
All DNA structures in the body are identical
A DNA molecule is made up of Nucleotides.
DNA can be found in the nucleus and are grouped into chromosomes.
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Labelling
A DNA molecule is known to have a double helix structure, made up of millions of tiny nucleotides. Complete the structure on the right by adding the proper labels.
Nitrogeous base
Sugar phosphate backbone
Cytosine
Thymine
Guanine
Base pairs
Adenine
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Match
Nucleotides consist of bases that pair specifically with complementary bases. Match the bases below to the correct base they pair with.
Guanine (G)
Thymine (T)
Cytosine (C)
Adenine (A)
Cytosine (C)
Adenine (A)
Guanine (G)
Thymine (T)
Cytosine (C)
Adenine (A)
Guanine (G)
Thymine (T)
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Dropdown
10
Reorder
Resources for extra learning:
As explained by Bergtrom (n.d.) in the article The Process of Replication, DNA replication involves the joining of nucleotide building blocks through repeated dehydration reactions, resulting in the formation of a long DNA strand.
With this knowledge, reorder the steps of DNA replication.
Unwinding- The enzyme helicase creates a replication fork.
Priming- Primase adds short RNA primers for synthesis.
Elongation- DNA polymerase adds new nucleotides.
Leading and lagging strands are made
Joining- Ligase seals the fragments together.
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Hotspot
Show which areas on the (gene) DNA are non-coding areas.
Life Sciences Grade 12
DNA: Code of life
(CAPS, 2011:59)
By Danielle Plooy
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